Research Farm, Brookings, South Dakota, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
August Air Quality Analysis
Research Farm, Brookings, South Dakota, United States
2021
2022
2023
2024
2025
AQI
.
Days
AQI Trends: Highest and Lowest
Highest AQI recorded on
15th Aug 2023
125AQILowest AQI recorded on
25th Aug 2021
17AQISame Day Analysis (9th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 26 of Good air quality, showing improvement over 2024 and 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report
Day & Night AQI Trend: 10th Aug - 11th Aug 2025
Research Farm, Brookings, South Dakota, United States
AQI
Day
Night
.
6 AM10th Aug 2025
8 PM
5 AM11th Aug 2025
Day time
Avg. Highest Time
12PM10th Aug
49AQI
Avg. Lowest Time
6AM10th Aug
19AQI
Night time
Avg. Highest Time
2AM11th Aug
127AQI
Avg. Lowest Time
9PM10th Aug
55AQI
In the last 24 hours,
Research Farm's AQI reached its highest point of 127 at 2 AM during the Night, while the lowest point, 19, was recorded at 6 AM during the Day between 10th Aug and 11th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Research Farm, Brookings, South Dakota, United States
JulAug
12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th
Day
Night
12th Jul 2025426 AMAQI
12th Jul 2025457 AMAQI
12th Jul 2025538 AMAQI
12th Jul 2025439 AMAQI
12th Jul 20254610 AMAQI
12th Jul 20254011 AMAQI
12th Jul 20253912 PMAQI
12th Jul 2025501 PMAQI
12th Jul 2025462 PMAQI
12th Jul 2025583 PMAQI
12th Jul 2025604 PMAQI
12th Jul 2025565 PMAQI
12th Jul 2025596 PMAQI
12th Jul 2025567 PMAQI
12th Jul 2025588 PMAQI
12th Jul 2025789 PMAQI
12th Jul 20256810 PMAQI
12th Jul 20257011 PMAQI
13th Jul 20257212 AMAQI
13th Jul 2025721 AMAQI
13th Jul 20251012 AMAQI
13th Jul 2025843 AMAQI
13th Jul 20251094 AMAQI
13th Jul 20251175 AMAQI
21°C13/27°C
13th Jul 2025936 AMAQI
13th Jul 2025887 AMAQI
13th Jul 2025858 AMAQI
13th Jul 2025869 AMAQI
13th Jul 20257810 AMAQI
13th Jul 20257211 AMAQI
13th Jul 20257012 PMAQI
13th Jul 2025671 PMAQI
13th Jul 2025672 PMAQI
13th Jul 2025723 PMAQI
13th Jul 2025704 PMAQI
13th Jul 2025745 PMAQI
13th Jul 2025726 PMAQI
13th Jul 2025857 PMAQI
13th Jul 2025838 PMAQI
13th Jul 2025709 PMAQI
13th Jul 20257110 PMAQI
13th Jul 20257411 PMAQI
14th Jul 20257512 AMAQI
14th Jul 2025691 AMAQI
14th Jul 2025512 AMAQI
14th Jul 2025533 AMAQI
14th Jul 2025464 AMAQI
14th Jul 2025405 AMAQI
23°C13/32°C
14th Jul 2025416 AMAQI
14th Jul 2025527 AMAQI
14th Jul 2025528 AMAQI
14th Jul 2025559 AMAQI
14th Jul 20255110 AMAQI
14th Jul 20255411 AMAQI
14th Jul 20255412 PMAQI
14th Jul 2025511 PMAQI
14th Jul 2025532 PMAQI
14th Jul 2025543 PMAQI
14th Jul 2025564 PMAQI
14th Jul 2025555 PMAQI
14th Jul 2025526 PMAQI
14th Jul 2025557 PMAQI
14th Jul 2025568 PMAQI
14th Jul 2025549 PMAQI
14th Jul 20255310 PMAQI
14th Jul 20255311 PMAQI
15th Jul 20255312 AMAQI
15th Jul 2025521 AMAQI
15th Jul 2025462 AMAQI
15th Jul 2025413 AMAQI
15th Jul 2025344 AMAQI
15th Jul 2025345 AMAQI
26°C18/35°C
15th Jul 2025396 AMAQI
15th Jul 2025437 AMAQI
15th Jul 2025458 AMAQI
15th Jul 2025459 AMAQI
15th Jul 20254710 AMAQI
15th Jul 20255411 AMAQI
15th Jul 20255312 PMAQI
15th Jul 2025501 PMAQI
15th Jul 2025492 PMAQI
15th Jul 2025463 PMAQI
15th Jul 2025444 PMAQI
15th Jul 2025475 PMAQI
15th Jul 2025446 PMAQI
15th Jul 2025497 PMAQI
15th Jul 2025518 PMAQI
15th Jul 2025499 PMAQI
15th Jul 20255010 PMAQI
15th Jul 20255311 PMAQI
16th Jul 20255112 AMAQI
16th Jul 2025461 AMAQI
16th Jul 2025452 AMAQI
16th Jul 2025313 AMAQI
16th Jul 2025344 AMAQI
16th Jul 2025535 AMAQI
27°C17/35°C
16th Jul 2025536 AMAQI
16th Jul 2025547 AMAQI
16th Jul 2025598 AMAQI
16th Jul 2025639 AMAQI
16th Jul 20256110 AMAQI
16th Jul 20254911 AMAQI
16th Jul 20253412 PMAQI
16th Jul 2025311 PMAQI
16th Jul 2025292 PMAQI
16th Jul 2025383 PMAQI
16th Jul 2025394 PMAQI
16th Jul 2025415 PMAQI
16th Jul 2025426 PMAQI
16th Jul 2025447 PMAQI
16th Jul 2025468 PMAQI
16th Jul 2025419 PMAQI
16th Jul 20254010 PMAQI
16th Jul 20254011 PMAQI
17th Jul 20254112 AMAQI
17th Jul 2025401 AMAQI
17th Jul 2025352 AMAQI
17th Jul 2025333 AMAQI
17th Jul 2025304 AMAQI
17th Jul 2025315 AMAQI
17°C12/20°C
17th Jul 2025356 AMAQI
17th Jul 2025377 AMAQI
17th Jul 2025368 AMAQI
17th Jul 2025349 AMAQI
17th Jul 20253410 AMAQI
17th Jul 20253111 AMAQI
17th Jul 20252612 PMAQI
17th Jul 2025231 PMAQI
17th Jul 2025292 PMAQI
17th Jul 2025343 PMAQI
17th Jul 2025324 PMAQI
17th Jul 2025325 PMAQI
17th Jul 2025326 PMAQI
17th Jul 2025327 PMAQI
17th Jul 2025328 PMAQI
17th Jul 2025289 PMAQI
17th Jul 20252710 PMAQI
17th Jul 20252911 PMAQI
18th Jul 20253112 AMAQI
18th Jul 2025291 AMAQI
18th Jul 2025242 AMAQI
18th Jul 2025233 AMAQI
18th Jul 2025274 AMAQI
18th Jul 2025265 AMAQI
17°C10/24°C
18th Jul 2025246 AMAQI
18th Jul 2025257 AMAQI
18th Jul 2025298 AMAQI
18th Jul 2025279 AMAQI
18th Jul 20252810 AMAQI
18th Jul 20252811 AMAQI
18th Jul 20252612 PMAQI
18th Jul 2025341 PMAQI
18th Jul 2025362 PMAQI
18th Jul 2025313 PMAQI
18th Jul 2025304 PMAQI
18th Jul 2025305 PMAQI
18th Jul 2025306 PMAQI
18th Jul 2025307 PMAQI
18th Jul 2025348 PMAQI
18th Jul 2025489 PMAQI
18th Jul 20254510 PMAQI
18th Jul 20254411 PMAQI
19th Jul 20254212 AMAQI
19th Jul 2025301 AMAQI
19th Jul 2025192 AMAQI
19th Jul 2025203 AMAQI
19th Jul 2025194 AMAQI
19th Jul 2025205 AMAQI
20°C14/26°C
19th Jul 2025236 AMAQI
19th Jul 2025207 AMAQI
19th Jul 2025208 AMAQI
19th Jul 2025209 AMAQI
19th Jul 20252210 AMAQI
19th Jul 20252211 AMAQI
19th Jul 20252212 PMAQI
19th Jul 2025261 PMAQI
19th Jul 2025252 PMAQI
19th Jul 2025243 PMAQI
19th Jul 2025224 PMAQI
19th Jul 2025235 PMAQI
19th Jul 2025236 PMAQI
19th Jul 2025247 PMAQI
19th Jul 2025258 PMAQI
19th Jul 2025259 PMAQI
19th Jul 20252410 PMAQI
19th Jul 20252111 PMAQI
20th Jul 20251912 AMAQI
20th Jul 2025161 AMAQI
20th Jul 2025182 AMAQI
20th Jul 2025163 AMAQI
20th Jul 2025184 AMAQI
20th Jul 2025275 AMAQI
22°C18/28°C
20th Jul 2025266 AMAQI
20th Jul 2025267 AMAQI
20th Jul 2025238 AMAQI
20th Jul 2025219 AMAQI
20th Jul 20252610 AMAQI
20th Jul 20253211 AMAQI
20th Jul 20253112 PMAQI
20th Jul 2025301 PMAQI
20th Jul 2025282 PMAQI
20th Jul 2025243 PMAQI
20th Jul 2025244 PMAQI
20th Jul 2025245 PMAQI
20th Jul 2025276 PMAQI
20th Jul 2025247 PMAQI
20th Jul 2025248 PMAQI
20th Jul 2025269 PMAQI
20th Jul 20252410 PMAQI
20th Jul 20252611 PMAQI
21st Jul 20252812 AMAQI
21st Jul 2025271 AMAQI
21st Jul 2025232 AMAQI
21st Jul 2025213 AMAQI
21st Jul 2025174 AMAQI
21st Jul 2025195 AMAQI
21°C13/28°C
21st Jul 2025286 AMAQI
21st Jul 2025367 AMAQI
21st Jul 2025278 AMAQI
21st Jul 2025229 AMAQI
21st Jul 20252210 AMAQI
21st Jul 20252711 AMAQI
21st Jul 20252412 PMAQI
21st Jul 2025311 PMAQI
21st Jul 2025242 PMAQI
21st Jul 2025263 PMAQI
21st Jul 2025294 PMAQI
21st Jul 2025265 PMAQI
21st Jul 2025266 PMAQI
21st Jul 2025267 PMAQI
21st Jul 2025248 PMAQI
21st Jul 2025259 PMAQI
21st Jul 20252710 PMAQI
21st Jul 20252811 PMAQI
22nd Jul 20253212 AMAQI
22nd Jul 2025301 AMAQI
22nd Jul 2025332 AMAQI
22nd Jul 2025353 AMAQI
22nd Jul 2025304 AMAQI
22nd Jul 2025265 AMAQI
25°C19/30°C
22nd Jul 2025346 AMAQI
22nd Jul 2025307 AMAQI
22nd Jul 2025268 AMAQI
22nd Jul 2025269 AMAQI
22nd Jul 20252310 AMAQI
22nd Jul 20252411 AMAQI
22nd Jul 20252412 PMAQI
22nd Jul 2025241 PMAQI
22nd Jul 2025242 PMAQI
22nd Jul 2025273 PMAQI
22nd Jul 2025254 PMAQI
22nd Jul 2025265 PMAQI
22nd Jul 2025256 PMAQI
22nd Jul 2025267 PMAQI
22nd Jul 2025288 PMAQI
22nd Jul 2025319 PMAQI
22nd Jul 20253110 PMAQI
22nd Jul 20253111 PMAQI
23rd Jul 20253312 AMAQI
23rd Jul 2025361 AMAQI
23rd Jul 2025382 AMAQI
23rd Jul 2025603 AMAQI
23rd Jul 2025954 AMAQI
23rd Jul 2025665 AMAQI
27°C22/33°C
23rd Jul 20251486 AMAQI
23rd Jul 2025957 AMAQI
23rd Jul 20251158 AMAQI
23rd Jul 2025509 AMAQI
23rd Jul 20255010 AMAQI
23rd Jul 20256611 AMAQI
23rd Jul 20255112 PMAQI
23rd Jul 2025381 PMAQI
23rd Jul 2025392 PMAQI
23rd Jul 2025473 PMAQI
23rd Jul 2025384 PMAQI
23rd Jul 2025365 PMAQI
23rd Jul 2025356 PMAQI
23rd Jul 2025407 PMAQI
23rd Jul 2025428 PMAQI
23rd Jul 2025349 PMAQI
23rd Jul 20253610 PMAQI
23rd Jul 20254111 PMAQI
24th Jul 20254312 AMAQI
24th Jul 2025371 AMAQI
24th Jul 2025362 AMAQI
24th Jul 2025323 AMAQI
24th Jul 2025394 AMAQI
24th Jul 2025165 AMAQI
25°C18/34°C
24th Jul 2025236 AMAQI
24th Jul 2025307 AMAQI
24th Jul 2025368 AMAQI
24th Jul 2025609 AMAQI
24th Jul 20257510 AMAQI
24th Jul 20258211 AMAQI
24th Jul 20256812 PMAQI
24th Jul 2025731 PMAQI
24th Jul 2025682 PMAQI
24th Jul 2025633 PMAQI
24th Jul 2025624 PMAQI
24th Jul 2025575 PMAQI
24th Jul 2025586 PMAQI
24th Jul 2025527 PMAQI
24th Jul 2025568 PMAQI
24th Jul 2025639 PMAQI
24th Jul 20256310 PMAQI
24th Jul 20256411 PMAQI
25th Jul 20256212 AMAQI
25th Jul 2025631 AMAQI
25th Jul 2025622 AMAQI
25th Jul 2025603 AMAQI
25th Jul 2025554 AMAQI
25th Jul 2025565 AMAQI
23°C17/30°C
25th Jul 2025556 AMAQI
25th Jul 2025547 AMAQI
25th Jul 2025528 AMAQI
25th Jul 2025529 AMAQI
25th Jul 20254810 AMAQI
25th Jul 20254711 AMAQI
25th Jul 20254812 PMAQI
25th Jul 2025421 PMAQI
25th Jul 2025322 PMAQI
25th Jul 2025423 PMAQI
25th Jul 2025424 PMAQI
25th Jul 2025435 PMAQI
25th Jul 2025466 PMAQI
25th Jul 2025537 PMAQI
25th Jul 2025528 PMAQI
25th Jul 2025489 PMAQI
25th Jul 20254610 PMAQI
25th Jul 20254011 PMAQI
26th Jul 20253812 AMAQI
26th Jul 2025351 AMAQI
26th Jul 2025192 AMAQI
26th Jul 2025183 AMAQI
26th Jul 2025184 AMAQI
26th Jul 2025175 AMAQI
24°C16/31°C
26th Jul 2025166 AMAQI
26th Jul 2025557 AMAQI
26th Jul 2025238 AMAQI
26th Jul 2025259 AMAQI
26th Jul 20252310 AMAQI
26th Jul 20252211 AMAQI
26th Jul 20252212 PMAQI
26th Jul 2025261 PMAQI
26th Jul 2025322 PMAQI
26th Jul 2025323 PMAQI
26th Jul 2025284 PMAQI
26th Jul 2025265 PMAQI
26th Jul 2025266 PMAQI
26th Jul 2025267 PMAQI
26th Jul 2025288 PMAQI
26th Jul 2025329 PMAQI
26th Jul 20253010 PMAQI
26th Jul 20252811 PMAQI
27th Jul 20252812 AMAQI
27th Jul 2025271 AMAQI
27th Jul 2025212 AMAQI
27th Jul 2025223 AMAQI
27th Jul 2025224 AMAQI
27th Jul 2025185 AMAQI
26°C20/34°C
27th Jul 2025196 AMAQI
27th Jul 2025227 AMAQI
27th Jul 2025248 AMAQI
27th Jul 2025249 AMAQI
27th Jul 20252310 AMAQI
27th Jul 20252311 AMAQI
27th Jul 20252212 PMAQI
27th Jul 2025211 PMAQI
27th Jul 2025242 PMAQI
27th Jul 2025243 PMAQI
27th Jul 2025234 PMAQI
27th Jul 2025265 PMAQI
27th Jul 2025256 PMAQI
27th Jul 2025247 PMAQI
27th Jul 2025258 PMAQI
27th Jul 2025289 PMAQI
27th Jul 20252810 PMAQI
27th Jul 20252911 PMAQI
28th Jul 20252812 AMAQI
28th Jul 2025251 AMAQI
28th Jul 2025222 AMAQI
28th Jul 2025203 AMAQI
28th Jul 2025214 AMAQI
28th Jul 2025225 AMAQI
29°C21/36°C
28th Jul 2025206 AMAQI
28th Jul 2025227 AMAQI
28th Jul 2025248 AMAQI
28th Jul 2025269 AMAQI
28th Jul 20252810 AMAQI
28th Jul 20253311 AMAQI
28th Jul 20252812 PMAQI
28th Jul 2025231 PMAQI
28th Jul 2025222 PMAQI
28th Jul 2025243 PMAQI
28th Jul 2025244 PMAQI
28th Jul 2025245 PMAQI
28th Jul 2025236 PMAQI
28th Jul 2025247 PMAQI
28th Jul 2025268 PMAQI
28th Jul 2025309 PMAQI
28th Jul 20253210 PMAQI
28th Jul 20252911 PMAQI
29th Jul 20252612 AMAQI
29th Jul 2025241 AMAQI
29th Jul 2025192 AMAQI
29th Jul 2025203 AMAQI
29th Jul 2025234 AMAQI
29th Jul 2025265 AMAQI
27°C20/35°C
29th Jul 2025246 AMAQI
29th Jul 2025277 AMAQI
29th Jul 2025278 AMAQI
29th Jul 2025309 AMAQI
29th Jul 20252610 AMAQI
29th Jul 20252211 AMAQI
29th Jul 20252412 PMAQI
29th Jul 2025241 PMAQI
29th Jul 2025262 PMAQI
29th Jul 2025263 PMAQI
29th Jul 2025254 PMAQI
29th Jul 2025265 PMAQI
29th Jul 2025246 PMAQI
29th Jul 2025267 PMAQI
29th Jul 2025268 PMAQI
29th Jul 2025319 PMAQI
29th Jul 20253410 PMAQI
29th Jul 20253611 PMAQI
30th Jul 20253312 AMAQI
30th Jul 2025301 AMAQI
30th Jul 2025262 AMAQI
30th Jul 2025283 AMAQI
30th Jul 2025304 AMAQI
30th Jul 2025315 AMAQI
23°C18/28°C
30th Jul 2025386 AMAQI
30th Jul 2025387 AMAQI
30th Jul 2025468 AMAQI
30th Jul 2025549 AMAQI
30th Jul 20256010 AMAQI
30th Jul 20256211 AMAQI
30th Jul 20256512 PMAQI
30th Jul 2025591 PMAQI
30th Jul 2025592 PMAQI
30th Jul 2025593 PMAQI
30th Jul 2025594 PMAQI
30th Jul 2025595 PMAQI
30th Jul 2025596 PMAQI
30th Jul 2025597 PMAQI
30th Jul 2025598 PMAQI
30th Jul 2025679 PMAQI
30th Jul 20256610 PMAQI
30th Jul 20257211 PMAQI
31st Jul 20257612 AMAQI
31st Jul 2025761 AMAQI
31st Jul 20251242 AMAQI
31st Jul 20251123 AMAQI
31st Jul 20251004 AMAQI
31st Jul 20251205 AMAQI
21°C16/26°C
31st Jul 20251256 AMAQI
31st Jul 20251317 AMAQI
31st Jul 20251228 AMAQI
31st Jul 20251289 AMAQI
31st Jul 202512310 AMAQI
31st Jul 202512811 AMAQI
31st Jul 202512312 PMAQI
31st Jul 20251311 PMAQI
31st Jul 20251182 PMAQI
31st Jul 20251173 PMAQI
31st Jul 20251284 PMAQI
31st Jul 20251145 PMAQI
31st Jul 20251166 PMAQI
31st Jul 20251267 PMAQI
31st Jul 20251178 PMAQI
31st Jul 20251069 PMAQI
31st Jul 202510110 PMAQI
31st Jul 202510411 PMAQI
1st Aug 202511012 AMAQI
1st Aug 20251201 AMAQI
1st Aug 20251142 AMAQI
1st Aug 20251163 AMAQI
1st Aug 20251134 AMAQI
1st Aug 20251085 AMAQI
19°C13/26°C
1st Aug 20251136 AMAQI
1st Aug 20251167 AMAQI
1st Aug 20251218 AMAQI
1st Aug 20251299 AMAQI
1st Aug 202513410 AMAQI
1st Aug 202513311 AMAQI
1st Aug 202515212 PMAQI
1st Aug 20251521 PMAQI
1st Aug 20251492 PMAQI
1st Aug 20251383 PMAQI
1st Aug 20251324 PMAQI
1st Aug 20251335 PMAQI
1st Aug 20251246 PMAQI
1st Aug 20251217 PMAQI
1st Aug 20251258 PMAQI
1st Aug 20251259 PMAQI
1st Aug 202512610 PMAQI
1st Aug 202512211 PMAQI
2nd Aug 202512012 AMAQI
2nd Aug 20251321 AMAQI
2nd Aug 20251282 AMAQI
2nd Aug 20251283 AMAQI
2nd Aug 20251304 AMAQI
2nd Aug 20251265 AMAQI
19°C11/25°C
2nd Aug 20251236 AMAQI
2nd Aug 20251187 AMAQI
2nd Aug 20251168 AMAQI
2nd Aug 20251189 AMAQI
2nd Aug 202511410 AMAQI
2nd Aug 202511211 AMAQI
2nd Aug 202511212 PMAQI
2nd Aug 20251101 PMAQI
2nd Aug 2025962 PMAQI
2nd Aug 2025903 PMAQI
2nd Aug 2025884 PMAQI
2nd Aug 2025905 PMAQI
2nd Aug 2025836 PMAQI
2nd Aug 20251187 PMAQI
2nd Aug 20251018 PMAQI
2nd Aug 2025969 PMAQI
2nd Aug 20259010 PMAQI
2nd Aug 20259111 PMAQI
3rd Aug 20259412 AMAQI
3rd Aug 20251021 AMAQI
3rd Aug 2025922 AMAQI
3rd Aug 2025903 AMAQI
3rd Aug 2025924 AMAQI
3rd Aug 2025965 AMAQI
17°C10/26°C
3rd Aug 2025906 AMAQI
3rd Aug 2025927 AMAQI
3rd Aug 2025938 AMAQI
3rd Aug 2025899 AMAQI
3rd Aug 20258810 AMAQI
3rd Aug 20258711 AMAQI
3rd Aug 20258212 PMAQI
3rd Aug 2025761 PMAQI
3rd Aug 2025782 PMAQI
3rd Aug 2025803 PMAQI
3rd Aug 2025804 PMAQI
3rd Aug 2025815 PMAQI
3rd Aug 2025806 PMAQI
3rd Aug 2025897 PMAQI
3rd Aug 2025818 PMAQI
3rd Aug 2025769 PMAQI
3rd Aug 20257610 PMAQI
3rd Aug 20257511 PMAQI
4th Aug 20257712 AMAQI
4th Aug 2025761 AMAQI
4th Aug 2025722 AMAQI
4th Aug 2025733 AMAQI
4th Aug 2025754 AMAQI
4th Aug 2025725 AMAQI
17°C16/19°C
4th Aug 2025686 AMAQI
4th Aug 2025657 AMAQI
4th Aug 2025618 AMAQI
4th Aug 2025629 AMAQI
4th Aug 20256210 AMAQI
4th Aug 20256311 AMAQI
4th Aug 20256112 PMAQI
4th Aug 2025581 PMAQI
4th Aug 2025562 PMAQI
4th Aug 2025533 PMAQI
4th Aug 2025544 PMAQI
4th Aug 2025525 PMAQI
4th Aug 2025546 PMAQI
4th Aug 2025647 PMAQI
4th Aug 2025608 PMAQI
4th Aug 2025539 PMAQI
4th Aug 20255210 PMAQI
4th Aug 20255411 PMAQI
5th Aug 20255412 AMAQI
5th Aug 2025521 AMAQI
5th Aug 2025532 AMAQI
5th Aug 2025493 AMAQI
5th Aug 2025524 AMAQI
5th Aug 2025555 AMAQI
20°C17/24°C
5th Aug 2025576 AMAQI
5th Aug 2025597 AMAQI
5th Aug 2025618 AMAQI
5th Aug 2025609 AMAQI
5th Aug 20256010 AMAQI
5th Aug 20255811 AMAQI
5th Aug 20255312 PMAQI
5th Aug 2025521 PMAQI
5th Aug 2025522 PMAQI
5th Aug 2025523 PMAQI
5th Aug 2025534 PMAQI
5th Aug 2025475 PMAQI
5th Aug 2025456 PMAQI
5th Aug 2025537 PMAQI
5th Aug 2025518 PMAQI
5th Aug 2025429 PMAQI
5th Aug 20254510 PMAQI
5th Aug 20254011 PMAQI
6th Aug 20253612 AMAQI
6th Aug 2025341 AMAQI
6th Aug 2025342 AMAQI
6th Aug 2025273 AMAQI
6th Aug 2025234 AMAQI
6th Aug 2025205 AMAQI
22°C17/29°C
6th Aug 2025216 AMAQI
6th Aug 2025217 AMAQI
6th Aug 2025228 AMAQI
6th Aug 2025209 AMAQI
6th Aug 20252410 AMAQI
6th Aug 20252411 AMAQI
6th Aug 20252412 PMAQI
6th Aug 2025211 PMAQI
6th Aug 2025212 PMAQI
6th Aug 2025183 PMAQI
6th Aug 2025184 PMAQI
6th Aug 2025195 PMAQI
6th Aug 2025176 PMAQI
6th Aug 2025197 PMAQI
6th Aug 2025218 PMAQI
6th Aug 2025199 PMAQI
6th Aug 20252010 PMAQI
6th Aug 20252611 PMAQI
7th Aug 20252812 AMAQI
7th Aug 2025261 AMAQI
7th Aug 2025192 AMAQI
7th Aug 2025203 AMAQI
7th Aug 2025164 AMAQI
7th Aug 2025185 AMAQI
24°C19/29°C
7th Aug 2025186 AMAQI
7th Aug 2025207 AMAQI
7th Aug 2025208 AMAQI
7th Aug 2025209 AMAQI
7th Aug 20252110 AMAQI
7th Aug 20252211 AMAQI
7th Aug 20252612 PMAQI
7th Aug 2025331 PMAQI
7th Aug 2025362 PMAQI
7th Aug 2025383 PMAQI
7th Aug 2025394 PMAQI
7th Aug 2025395 PMAQI
7th Aug 2025406 PMAQI
7th Aug 2025267 PMAQI
7th Aug 2025268 PMAQI
7th Aug 2025419 PMAQI
7th Aug 20254210 PMAQI
7th Aug 20254211 PMAQI
8th Aug 20254112 AMAQI
8th Aug 2025431 AMAQI
8th Aug 2025502 AMAQI
8th Aug 2025513 AMAQI
8th Aug 2025514 AMAQI
8th Aug 2025535 AMAQI
26°C20/32°C
8th Aug 2025566 AMAQI
8th Aug 2025547 AMAQI
8th Aug 2025528 AMAQI
8th Aug 2025509 AMAQI
8th Aug 20254010 AMAQI
8th Aug 20253311 AMAQI
8th Aug 20253112 PMAQI
8th Aug 2025431 PMAQI
8th Aug 2025432 PMAQI
8th Aug 2025493 PMAQI
8th Aug 2025504 PMAQI
8th Aug 2025525 PMAQI
8th Aug 2025516 PMAQI
8th Aug 2025527 PMAQI
8th Aug 2025528 PMAQI
8th Aug 2025529 PMAQI
8th Aug 20255210 PMAQI
8th Aug 20255111 PMAQI
9th Aug 20255012 AMAQI
9th Aug 2025471 AMAQI
9th Aug 2025312 AMAQI
9th Aug 2025263 AMAQI
9th Aug 2025264 AMAQI
9th Aug 2025245 AMAQI
25°C23/30°C
9th Aug 2025186 AMAQI
9th Aug 2025187 AMAQI
9th Aug 2025228 AMAQI
9th Aug 2025249 AMAQI
9th Aug 20252110 AMAQI
9th Aug 20251911 AMAQI
9th Aug 20251912 PMAQI
9th Aug 2025221 PMAQI
9th Aug 2025242 PMAQI
9th Aug 2025263 PMAQI
9th Aug 2025244 PMAQI
9th Aug 2025225 PMAQI
9th Aug 2025226 PMAQI
9th Aug 2025227 PMAQI
9th Aug 2025218 PMAQI
9th Aug 2025219 PMAQI
9th Aug 20252410 PMAQI
9th Aug 20252611 PMAQI
10th Aug 20252912 AMAQI
10th Aug 2025281 AMAQI
10th Aug 2025242 AMAQI
10th Aug 2025203 AMAQI
10th Aug 2025234 AMAQI
10th Aug 2025185 AMAQI
24°C20/30°C
10th Aug 2025196 AMAQI
10th Aug 2025227 AMAQI
10th Aug 2025248 AMAQI
10th Aug 2025329 AMAQI
10th Aug 20253410 AMAQI
10th Aug 20254311 AMAQI
10th Aug 20254912 PMAQI
10th Aug 2025481 PMAQI
10th Aug 2025372 PMAQI
10th Aug 2025343 PMAQI
10th Aug 2025324 PMAQI
10th Aug 2025385 PMAQI
10th Aug 2025436 PMAQI
10th Aug 2025347 PMAQI
10th Aug 2025388 PMAQI
10th Aug 2025559 PMAQI
10th Aug 20255810 PMAQI
10th Aug 20255811 PMAQI
11th Aug 20256012 AMAQI
11th Aug 2025921 AMAQI
11th Aug 20251272 AMAQI
11th Aug 2025863 AMAQI
11th Aug 2025794 AMAQI
11th Aug 2025725 AMAQI
21°C15/28°C
11th Aug 2025636 AMAQI
6 AM1 PM
8 PM
1 AM
5 AM
--°C/°C
Day time
Avg. Highest Time
6 AM - 8 PM
49AQI
15 hours / Day
450 hours / Month
Avg. Lowest Time
6 AM - 8 PM
49AQI
15 hours / Day
450 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 6 AM to 8 PM (Avg. 49), while the lowest AQI was between 6 AM to 8 PM (Avg. 49).
Night time
Avg. Highest Time
12 AM - 2 AM
50AQI
3 hours / Day
90 hours / Month
Avg. Lowest Time
3 AM - 5 AM
47AQI
3 hours / Day
90 hours / Month
In the last 30 days, during the daytime, the highest AQI was between 12 AM to 2 AM (Avg. 50), while the lowest AQI was between 3 AM to 5 AM (Avg. 47).
2025 Days Vs Air Quality
Research Farm, Brookings, South Dakota, United States
2025
83%
183
15%
34
2%
4
Total number of days with different AQI categories in last 223 days in 2025 (142 days remaining)
Good
183 DaysModerate
34 DaysPoor
4 DaysUnhealthy
0 DaysSevere
0 DaysHazardous
0 DaysUnder WHO’s Safe Air Quality Limits: 83%
Health Risk Level:
Low
In 2025, 83% of 223 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Research Farm, Brookings, South Dakota, United States
AQI levels in 2025
AQI
PM2.5
PM10
CO
SO2
NO2
O3
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
1st January 2025
34AQI
34AQI
2nd January 2025
36AQI
36AQI
3rd January 2025
25AQI
25AQI
4th January 2025
23AQI
23AQI
5th January 2025
24AQI
24AQI
6th January 2025
25AQI
25AQI
7th January 2025
28AQI
28AQI
8th January 2025
36AQI
36AQI
9th January 2025
39AQI
39AQI
10th January 2025
27AQI
27AQI
11th January 2025
29AQI
29AQI
12th January 2025
29AQI
29AQI
13th January 2025
26AQI
26AQI
14th January 2025
32AQI
32AQI
15th January 2025
27AQI
27AQI
16th January 2025
26AQI
26AQI
17th January 2025
30AQI
30AQI
18th January 2025
29AQI
29AQI
19th January 2025
28AQI
28AQI
20th January 2025
33AQI
33AQI
21st January 2025
28AQI
28AQI
22nd January 2025
27AQI
27AQI
23rd January 2025
29AQI
29AQI
24th January 2025
28AQI
28AQI
25th January 2025
27AQI
27AQI
26th January 2025
26AQI
26AQI
27th January 2025
26AQI
26AQI
28th January 2025
26AQI
26AQI
29th January 2025
25AQI
25AQI
30th January 2025
28AQI
28AQI
31st January 2025
38AQI
38AQI
1st February 2025
39AQI
39AQI
2nd February 2025
39AQI
39AQI
3rd February 2025
28AQI
28AQI
4th February 2025
25AQI
25AQI
5th February 2025
32AQI
32AQI
6th February 2025
31AQI
31AQI
7th February 2025
26AQI
26AQI
8th February 2025
32AQI
32AQI
9th February 2025
33AQI
33AQI
10th February 2025
43AQI
43AQI
11th February 2025
29AQI
29AQI
12th February 2025
36AQI
36AQI
13th February 2025
41AQI
41AQI
14th February 2025
51AQI
51AQI
15th February 2025
45AQI
45AQI
16th February 2025
29AQI
29AQI
17th February 2025
25AQI
25AQI
18th February 2025
25AQI
25AQI
19th February 2025
26AQI
26AQI
20th February 2025
28AQI
28AQI
21st February 2025
39AQI
39AQI
22nd February 2025
47AQI
47AQI
23rd February 2025
41AQI
41AQI
24th February 2025
25AQI
25AQI
25th February 2025
25AQI
25AQI
26th February 2025
29AQI
29AQI
27th February 2025
28AQI
28AQI
28th February 2025
27AQI
27AQI
1st March 2025
28AQI
28AQI
2nd March 2025
31AQI
31AQI
3rd March 2025
47AQI
47AQI
4th March 2025
40AQI
40AQI
5th March 2025
30AQI
30AQI
6th March 2025
26AQI
26AQI
7th March 2025
30AQI
30AQI
8th March 2025
29AQI
29AQI
9th March 2025
26AQI
26AQI
10th March 2025
27AQI
27AQI
11th March 2025
27AQI
27AQI
12th March 2025
29AQI
29AQI
13th March 2025
44AQI
44AQI
14th March 2025
59AQI
59AQI
15th March 2025
29AQI
29AQI
16th March 2025
18AQI
18AQI
17th March 2025
24AQI
24AQI
18th March 2025
30AQI
30AQI
19th March 2025
27AQI
27AQI
20th March 2025
30AQI
30AQI
21st March 2025
26AQI
26AQI
22nd March 2025
24AQI
24AQI
23rd March 2025
25AQI
25AQI
24th March 2025
28AQI
28AQI
25th March 2025
35AQI
35AQI
26th March 2025
33AQI
33AQI
27th March 2025
35AQI
35AQI
28th March 2025
57AQI
57AQI
29th March 2025
31AQI
31AQI
30th March 2025
25AQI
25AQI
31st March 2025
30AQI
30AQI
1st April 2025
40AQI
40AQI
2nd April 2025
42AQI
42AQI
3rd April 2025
38AQI
38AQI
4th April 2025
43AQI
43AQI
5th April 2025
32AQI
32AQI
6th April 2025
32AQI
32AQI
7th April 2025
28AQI
28AQI
8th April 2025
36AQI
36AQI
9th April 2025
46AQI
46AQI
10th April 2025
40AQI
40AQI
11th April 2025
37AQI
37AQI
12th April 2025
67AQI
67AQI
13th April 2025
58AQI
58AQI
14th April 2025
34AQI
34AQI
15th April 2025
27AQI
27AQI
16th April 2025
48AQI
48AQI
17th April 2025
62AQI
62AQI
18th April 2025
35AQI
35AQI
19th April 2025
34AQI
34AQI
20th April 2025
49AQI
49AQI
21st April 2025
44AQI
44AQI
22nd April 2025
39AQI
39AQI
23rd April 2025
38AQI
38AQI
24th April 2025
37AQI
37AQI
25th April 2025
34AQI
34AQI
26th April 2025
34AQI
34AQI
27th April 2025
39AQI
39AQI
28th April 2025
37AQI
37AQI
29th April 2025
29AQI
29AQI
30th April 2025
43AQI
43AQI
1st May 2025
33AQI
33AQI
2nd May 2025
27AQI
27AQI
3rd May 2025
39AQI
39AQI
4th May 2025
44AQI
44AQI
5th May 2025
45AQI
45AQI
6th May 2025
46AQI
46AQI
7th May 2025
43AQI
43AQI
8th May 2025
48AQI
48AQI
9th May 2025
54AQI
54AQI
10th May 2025
48AQI
48AQI
11th May 2025
59AQI
59AQI
12th May 2025
52AQI
52AQI
13th May 2025
50AQI
50AQI
14th May 2025
49AQI
49AQI
15th May 2025
39AQI
39AQI
16th May 2025
27AQI
27AQI
17th May 2025
21AQI
21AQI
18th May 2025
22AQI
22AQI
19th May 2025
27AQI
27AQI
20th May 2025
19AQI
19AQI
21st May 2025
17AQI
17AQI
22nd May 2025
21AQI
21AQI
23rd May 2025
30AQI
30AQI
24th May 2025
31AQI
31AQI
25th May 2025
36AQI
36AQI
26th May 2025
42AQI
42AQI
27th May 2025
30AQI
30AQI
28th May 2025
30AQI
30AQI
29th May 2025
30AQI
30AQI
30th May 2025
32AQI
32AQI
31st May 2025
82AQI
82AQI
1st June 2025
125AQI
125AQI
2nd June 2025
75AQI
75AQI
3rd June 2025
73AQI
73AQI
4th June 2025
60AQI
60AQI
5th June 2025
60AQI
60AQI
6th June 2025
56AQI
56AQI
7th June 2025
55AQI
55AQI
8th June 2025
66AQI
66AQI
9th June 2025
55AQI
55AQI
10th June 2025
67AQI
67AQI
11th June 2025
75AQI
75AQI
12th June 2025
75AQI
75AQI
13th June 2025
69AQI
69AQI
14th June 2025
43AQI
43AQI
15th June 2025
34AQI
34AQI
16th June 2025
36AQI
36AQI
17th June 2025
37AQI
37AQI
18th June 2025
41AQI
41AQI
19th June 2025
46AQI
46AQI
20th June 2025
42AQI
42AQI
21st June 2025
53AQI
53AQI
22nd June 2025
53AQI
53AQI
23rd June 2025
43AQI
43AQI
24th June 2025
40AQI
40AQI
25th June 2025
40AQI
40AQI
26th June 2025
26AQI
26AQI
27th June 2025
19AQI
19AQI
28th June 2025
25AQI
25AQI
29th June 2025
23AQI
23AQI
30th June 2025
30AQI
30AQI
1st July 2025
34AQI
34AQI
2nd July 2025
31AQI
31AQI
3rd July 2025
42AQI
42AQI
4th July 2025
52AQI
52AQI
5th July 2025
32AQI
32AQI
6th July 2025
43AQI
43AQI
7th July 2025
49AQI
49AQI
8th July 2025
31AQI
31AQI
9th July 2025
36AQI
36AQI
10th July 2025
28AQI
28AQI
11th July 2025
36AQI
36AQI
12th July 2025
54AQI
54AQI
13th July 2025
82AQI
82AQI
14th July 2025
54AQI
54AQI
15th July 2025
47AQI
47AQI
16th July 2025
44AQI
44AQI
17th July 2025
32AQI
32AQI
18th July 2025
31AQI
31AQI
19th July 2025
23AQI
23AQI
20th July 2025
24AQI
24AQI
21st July 2025
25AQI
25AQI
22nd July 2025
29AQI
29AQI
23rd July 2025
53AQI
53AQI
24th July 2025
51AQI
51AQI
25th July 2025
51AQI
51AQI
26th July 2025
26AQI
26AQI
27th July 2025
24AQI
24AQI
28th July 2025
25AQI
25AQI
29th July 2025
26AQI
26AQI
30th July 2025
49AQI
49AQI
31st July 2025
113AQI
113AQI
1st August 2025
125AQI
125AQI
2nd August 2025
111AQI
111AQI
3rd August 2025
86AQI
86AQI
4th August 2025
63AQI
63AQI
5th August 2025
52AQI
52AQI
6th August 2025
23AQI
23AQI
7th August 2025
28AQI
28AQI
8th August 2025
48AQI
48AQI
9th August 2025
26AQI
26AQI
29AQI
33AQI
32AQI
40AQI
38AQI
51AQI
41AQI
62AQI
No. of days
Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days
202539AQI
31
27
1
29
2
27
3
27
4
15
14
1
23
7
1
4
3
2
183
34
4
Highest AQI recorded in
August62AQI
Lowest AQI recorded in
January29AQI
202432AQI
31
29
31
30
26
5
27
2
25
6
28
3
26
4
17
13
1
30
30
1
330
34
1
Highest AQI recorded in
October50AQI
Lowest AQI recorded in
February23AQI
202337AQI
31
27
1
30
1
25
5
27
3
1
16
14
24
5
1
1
22
8
1
21
8
1
31
29
31
314
45
4
1
Highest AQI recorded in
June51AQI
Lowest AQI recorded in
October24AQI
202232AQI
30
1
22
31
27
2
1
25
6
27
2
1
21
1
2
29
25
6
30
28
3
297
21
2
Highest AQI recorded in
June41AQI
Lowest AQI recorded in
November25AQI
202135AQI
24
6
21
3
26
2
28
2
31
23
7
13
15
2
1
25
4
2
28
2
26
3
30
31
306
44
4
1
Highest AQI recorded in
July61AQI
Lowest AQI recorded in
December21AQI
202034AQI
13
20
18
25
5
31
28
2
24
6
25
5
28
2
27
4
239
24
Highest AQI recorded in
June40AQI
Lowest AQI recorded in
March29AQI
Most & Least Polluted Years Over the Last 6 Years
Most Polluted Year Recorded
2025(Avg.)
39AQILeast Polluted Year Recorded
2024(Avg.)
32AQIResearch Farm's annual 2025 AQI (39) shows an average percentage change of 13.9% (worsened AQI) compared to previous years: 2020 (34), 2021 (35), 2022 (32), 2023 (37), 2024 (32).
